Reducing boot time and power consumption in wearable display systems

ABSTRACT

One aspect disclosed is a method including determining a location from a positioning system receiver, determining, using a hardware processor and the location, that the location is approaching a path of direction of visual direction information, displaying the visual direction information on a display of a wearable device in response to the determining, determining, using the positioning system receiver, whether the turn of the visual direction information has been made, determining, by the hardware processor, a first period of time for display of the content data based on whether the turn of the visual direction information has been made, powering on the display and displaying, using the display, content data for the first period of time, turning off the display and the hardware processor following display of the content data.

CLAIM OF PRIORITY

This application is a continuation of and claims the benefit of priorityof U.S. patent application Ser. No. 16/288,041, filed Feb. 27, 2019,which is a continuation of and claims the benefit of priority of U.S.patent application Ser. No. 15/926,906, filed Mar. 20, 2018, which is acontinuation of and claims the benefit of priority of U.S. patentapplication Ser. No. 15/620,260, filed Jun. 12, 2017, which is acontinuation of and claims the benefit of priority of U.S. patent Ser.No. 14/744,832, filed Jun. 19, 2015, which is a continuation of andclaims the benefit of priority of U.S. patent application Ser. No.14/665,964, filed on Mar. 23, 2015. The contents of these priorapplications are considered part of this application, and are herebyincorporated by reference in their entirety.

BACKGROUND

Many wearable display systems are severely constrained by form factorwhich limits battery size and single charge use time. This isparticularly true for glasses with an integrated camera or display andwearable devices that integrate multiple functions using additionalsensor or circuitry for other functions, all of which make use of thedevice battery.

Systems and methods described herein therefore include wearable displaysystems with improved boot operation and power consumption.

BRIEF DESCRIPTION OF THE DRAWINGS

Various ones of the appended drawings merely illustrate exampleembodiments of the present disclosure and should not be considered aslimiting its scope.

FIG. 1 is a front perspective view of one embodiment of a camera device.

FIG. 2 is a block diagram illustrating a networked system includingdetails of a camera device, according to some example embodiments.

FIG. 3 is a flow diagram illustrating aspects of camera device operationaccording to some example embodiments.

FIG. 4 is a diagram illustrating a method of camera device operationaccording to some example embodiments.

FIGS. 5 and 6 illustrate camera devices including displays according tocertain example embodiments.

FIG. 7 is a flow diagram illustrating aspects of camera device operationaccording to some example embodiments.

FIG. 8 is a flow diagram illustrating a method of camera deviceoperation according to some example embodiments.

FIG. 9 is a block diagram illustrating an example of a softwarearchitecture that may be installed on a machine, according to someexample embodiments.

FIG. 10 illustrates an example user interface for a client deviceoperating an application in communication with a separate wirelesslyconnected camera device according to some example embodiments.

FIG. 11 illustrates a diagrammatic representation of a machine in theform of a computer system within which a set of instructions may beexecuted for causing the machine to perform any one or more of themethodologies discussed herein, according to an example embodiment.

DETAILED DESCRIPTION

The description that follows includes systems, methods, techniques,instruction sequences, and computing machine program products thatembody illustrative embodiments of the disclosure. In the followingdescription, for the purposes of explanation, numerous specific detailsare set forth in order to provide an understanding of variousembodiments of the inventive subject matter. It will be evident,however, to those skilled in the art, that embodiments of the inventivesubject matter may be practiced without these specific details. Ingeneral, well-known instruction instances, protocols, structures, andtechniques are not necessarily shown in detail.

Embodiments described herein relate to systems and methods for reducingboot time in a camera system while also lowering power consumption.Certain embodiments described in detail herein include eyeglasses withintegrated camera and wireless communication functionality. One exampleembodiment of such glasses includes a video processor for processingpicture and video data from a camera. This camera data can then eitherbe stored locally, or sent wirelessly to a client device such as asmartphone. Such glasses include separate low-power circuitry andhigh-speed circuitry in addition to the video processor. The low-powercircuitry is designed to allow a low-power state, where the videoprocessor and high-speed circuitry are off, and the low-power circuitryis monitoring battery power levels and communications with the user'ssmartphone or other client devices. Power levels and basic devicefunctionality can be monitored from an application of a smartphone incommunication with the glasses. The low-power circuitry is designed tobe able to maintain this low-power state of the glasses for weeks on asingle battery charge. Low-power state communications using thelow-power circuitry may be enabled using a low-power wireless protocolsuch as Bluetooth™ low energy (Bluetooth LE.) By using a low-powerprocessor and low-power wireless circuitry, the glasses are able toconserve power while maintaining a limited “on” state that avoidscertain delays associated with powering on from an “off” state. Thislow-power “on” state also allows a user's smartphone to connect to theglasses at any time when the glasses have a battery charge.

The glasses of this example embodiment include a single button thatallows a user to capture pictures or video. When the button is pressedand released, a picture is taken. When the button is pressed and held, avideo is captured for the duration of the button hold. In either case,the low-power processor receives an input signal from the button, andthe low-power processor manages the capture of camera data. Thelow-power processor boots the video processor, and the video processorthen captures camera data and writes the camera data to memory. Thevideo processor is then automatically powered off, and the glassesreturn to a low-power state. In order to enable capture of camera datathat is responsive to a user's button press while conserving power, thevideo processor of this example implementation uses a read only memory(ROM) with direct memory access (DMA) to boot the video processor. Sucha video processor can boot from an off state to capturing camera datawithin 300 milliseconds, and can then be returned to the off state assoon as the camera data is written to memory. This creates a responsiveuser experience while limiting battery drain.

Similarly, once camera data is captured in this example embodiment, thelow-power circuitry manages an energy efficient connection to a clientdevice, and transfer of the camera data to the device. For example, ifthe camera data is captured when there is no client device nearby, thelow-power wireless circuitry may periodically transmit a service setidentifier (SSID.) When a smartphone running an application associatedwith the glasses receives the SSID, the application may automaticallyrequest any new camera data from the glasses. The low-power processorverifies that the camera data has not been sent to the smartphonepreviously; then the low-power processor boots a high-speed processor ofthe high-speed circuitry. The high-speed processor turns on high-speedwireless circuitry, such as an 802.11 Wi-Fi chip. This high-speedwireless circuitry is then used to transmit the camera data from thememory of the glasses to the smartphone. When the transmission of cameradata completes, the high-speed circuitry is automatically powered down,and the glasses return to the low-power state. Just as with the captureof camera data above, the low-power processor manages the high-speedcircuitry, which consumes more power, to limit the power consumption byautomatically returning the glasses to the low-power state when the datatransfer is complete.

If the button on the glasses is pressed during transmission of thecamera data, the low-power processor may interrupt the transmission toallow the video processor to boot, capture additional camera data, andpower down as described above. The transfer may then be resumed if thesmartphone is still in communication with the glasses, or may be resumedlater if the connection has been interrupted.

The above example embodiment of glasses with an integrated camera is notlimiting, and it will be apparent that many different embodiments arepossible in view of the descriptions herein. Certain embodiments may beglasses with only the elements described above, including lenses, aframe, a video processor, high-speed circuitry, low-speed circuitry, asingle button, and a battery system, with no other components. Otherembodiments may have additional sensors, user interfaces, expandedmemory, or any combination of additional elements.

One particular additional embodiment may include a display integratedwith glasses. Such an embodiment may operate to conserve power in amanner similar to the operations described above for camera operationand camera data transfer. For example, an example embodiment with adisplay may operate in a low-power mode, with display elements powereddown and low-power circuitry monitoring battery-life and low-powerconnections with client devices. Such an embodiment may receive acommunication via a low-power wireless connection to display mediacontent on the display of the glasses. In response to the communication,the low-power circuitry will initiate a power up and boot of anyspecified elements, present the media content on the display of thedevice, and then automatically power down the display and associatedcircuitry to return to the low-power state after a fixed amount of time.Such operations may be integrated with any other operations andinterrupts for any other elements included in the glasses with thedisplay system.

Additionally, certain embodiments may not be glasses, but may behandheld camera devices, clothing attachments, watches, or any othersuch wearable device configured to capture camera data and communicatethe data wirelessly to a client device. Additional details of exampleembodiments are described below.

FIG. 1 shows aspects of certain embodiments illustrated by a frontperspective view of glasses 31. The glasses 31 can include a frame 32made from any suitable material such as plastic or metal, including anysuitable shape memory alloy. The frame 32 can have a front piece 33 thatcan include a first or left lens, display or optical element holder 36and a second or right lens, display or optical element holder 37connected by a bridge 38. The front piece 33 additionally includes aleft end portion 41 and a right end portion 42. A first or left opticalelement 43 and a second or right optical element 44 can be providedwithin respective left and right optical element holders 36, 37. Each ofthe optical elements 43, 44 can be a lens, a display, a display assemblyor a combination of the foregoing. Any of the display assembliesdisclosed herein can be provided in the glasses 31.

Frame 32 additionally includes a left arm or temple piece 46 and asecond arm or temple piece 47 coupled to the respective left and rightend portions 41, 42 of the front piece 33 by any suitable means such asa hinge (not shown), so as to be coupled to the front piece 33, orrigidly or fixably secured to the front piece so as to be integral withthe front piece 33. Each of the temple pieces 46 and 47 can include afirst portion 51 that is coupled to the respective end portion 41 or 42of the front piece 33 and any suitable second portion 52 for coupling tothe ear of the user. In one embodiment the front piece 33 can be formedfrom a single piece of material, so as to have a unitary or integralconstruction. In one embodiment, such as illustrated in FIG. 1, theentire frame 32 can be formed from a single piece of material so as tohave a unitary or integral construction.

Glasses 31 can include a computing device, such as computer 61, whichcan be of any suitable type so as to be carried by the frame 32 and, inone embodiment of a suitable size and shape, so as to be at leastpartially disposed in one of the temple pieces 46 and 47. In oneembodiment, as illustrated in FIG. 1, the computer 61 is sized andshaped similar to the size and shape of one of the temple pieces 46, 4 7and is thus disposed almost entirely if not entirely within thestructure and confines of such temple pieces 46 and 47. In oneembodiment, the computer 61 can be disposed in both of the temple pieces46, 47. The computer 61 can include one or more processors with memory,wireless communication circuitry, and a power source. As describedabove, the computer 61 comprises low-power circuitry, high-speedcircuitry, and a display processor. Various other embodiments mayinclude these elements in different configurations or integratedtogether in different ways. Additional details of aspects of computer 61may be implemented as illustrated by camera device 210 discussed below.

The computer 61 additionally includes a battery 62 or other suitableportable power supply. In one embodiment, the battery 62 is disposed inone of the temple pieces 46 or 47. In the glasses 31 shown in FIG. 1 thebattery 62 is shown as being disposed in left temple piece 46 andelectrically coupled using connection 74 to the remainder of thecomputer 61 disposed in the right temple piece 47. The one or more inputand output devices can include a connector or port (not shown) suitablefor charging a battery 62 accessible from the outside of frame 32, awireless receiver, transmitter or transceiver (not shown) or acombination of such devices.

Glasses 31 include cameras 69. Although two cameras are depicted, otherembodiments contemplate the use of a single or additional (i.e., morethan two) cameras. In various embodiments, glasses 31 may include anynumber of input sensors or peripheral devices in addition to cameras 69.Front piece 33 is provided with an outward facing, forward-facing orfront or outer surface 66 that faces forward or away from the user whenthe glasses 31 are mounted on the face of the user, and an oppositeinward-facing, rearward-facing or rear or inner surface 67 that facesthe face of the user when the glasses 31 are mounted on the face of theuser. Such sensors can include inwardly-facing video sensors or digitalimaging modules such as cameras that can be mounted on or providedwithin the inner surface 67 of the front piece 33 or elsewhere on theframe 32 so as to be facing the user, and outwardly-facing video sensorsor digital imaging modules such as cameras 69 that can be mounted on orprovided with the outer surface 66 of the front piece 33 or elsewhere onthe frame 32 so as to be facing away from the user. Such sensors,peripheral devices or peripherals can additionally include biometricsensors, location sensors, or any other such sensors.

FIG. 2 is a block diagram illustrating a networked system 200 includingdetails of a camera device 210, according to some example embodiments.In certain embodiments, camera device 210 may be implemented in glasses31 of FIG. 1 described above.

System 200 includes camera device 210, client device 290, and serversystem 298. Client device 290 may be a smartphone, tablet, phablet,laptop computer, access point, or any other such device capable ofconnecting with camera device 210 using both a low-power wirelessconnection 225 and a high-speed wireless connection 237. Client device290 is connected to server system 298 and network 295. The network 295may include any combination of wired and wireless connections. Serversystem 298 may be one or more computing devices as part of a service ornetwork computing system. Client device 290 and any elements of serversystem 298 and network 295 may be implemented using details of softwarearchitecture 902 or machine 1100 described in FIGS. 9 and 11.

System 200 may optionally include additional peripheral device elements219 and/or a display 211 integrated with camera device 210. Suchperipheral device elements 219 may include biometric sensors, additionalsensors, or display elements integrated with camera device 210. Examplesof peripheral device elements 219 are discussed further with respect toFIGS. 9 and 11. For example, peripheral device elements 219 may includeany I/O components 1150 including output components, 1152 motioncomponents 1158, or any other such elements described herein. Exampleembodiments of a display 211 are discussed in FIGS. 5 and 6.

Camera device 210 includes camera 214, video processor 212, interface216, low-power circuitry 220, and high-speed circuitry 230. Camera 214includes digital camera elements such as a charge coupled device, alens, or any other light capturing elements that may be used to capturedata as part of camera 214.

Interface 216 refers to any source of a user command that is provided tocamera device 210. In one implementation, interface 216 is a physicalbutton on a camera that, when depressed, sends a user input signal frominterface 216 to low power processor 222. A depression of such a camerabutton followed by an immediate release may be processed by low powerprocessor 222 as a request to capture a single image. A depression ofsuch a camera button for a first period of time may be processed bylow-power processor 222 as a request to capture video data while thebutton is depressed, and to cease video capture when the button isreleased, with the video captured while the button was depressed storedas a single video file. In certain embodiments, the low-power processor222 may have a threshold time period between the press of a button and arelease, such as 500 milliseconds or one second, below which the buttonpress and release is processed as an image request, and above which thebutton press and release is interpreted as a video request. The lowpower processor 222 may make this determination while the videoprocessor 212 is booting. In other embodiments, the interface 216 may beany mechanical switch or physical interface capable of accepting userinputs associated with a request for data from the camera 214. In otherembodiments, the interface 216 may have a software component, or may beassociated with a command received wirelessly from another source.

Video processor 212 includes circuitry to receive signals from thecamera 214 and process those signals from the camera 214 into a formatsuitable for storage in the memory 234. Video processor 212 isstructured within camera device 210 such that it may be powered on andbooted under the control of low-power circuitry 220. Video processor 212may additionally be powered down by low-power circuitry 220. Dependingon various power design elements associated with video processor 212,video processor 212 may still consume a small amount of power even whenit is in an off state. This power will, however, be negligible comparedto the power used by video processor 212 when it is in an on state, andwill also have a negligible impact on battery life. As described herein,device elements in an “off” state are still configured within a devicesuch that low-power processor 222 is able to power on and power down thedevices. A device that is referred to as “off” or “powered down” duringoperation of camera device 210 does not necessarily consume zero powerdue to leakage or other aspects of a system design.

In one example embodiment, video processor 212 comprises amicroprocessor integrated circuit (IC) customized for processing sensordata from camera 214, along with volatile memory used by themicroprocessor to operate. In order to reduce the amount of time thatvideo processor 212 takes when powering on to processing data, anon-volatile read only memory (ROM) may be integrated on the IC withinstructions for operating or booting the video processor 212. This ROMmay be minimized to match a minimum size needed to provide basicfunctionality for gathering sensor data from camera 214, such that noextra functionality that would cause delays in boot time are present.The ROM may be configured with direct memory access (DMA) to thevolatile memory of the microprocessor of video processor 212. DMA allowsmemory-to-memory transfer of data from the ROM to system memory of thevideo processor 212 independently of operation of a main controller ofvideo processor 212. Providing DMA to this boot ROM further reduces theamount of time from power on of the video processor 212 until sensordata from the camera 214 can be processed and stored. In certainembodiments, minimal processing of the camera signal from the camera 214is performed by the video processor 212, and additional processing maybe performed by applications operating on the client device 290 orserver system 298.

Low-power circuitry 220 includes low-power processor 222 and low-powerwireless circuitry 224. These elements of low-power circuitry 220 may beimplemented as separate elements or may be implemented on a single IC aspart of a system on a single chip. Low-power processor 222 includeslogic for managing the other elements of the camera device 210. Asdescribed above, for example, low power processor 222 may accept userinput signals from an interface 216. Low-power processor 222 may also beconfigured to receive input signals or instruction communications fromclient device 290 via low-power wireless connection 225. Additionaldetails related to such instructions are described further below.Low-power wireless circuitry 224 includes circuit elements forimplementing a low-power wireless communication system. Bluetooth™Smart, also known as Bluetooth™ low energy, is one standardimplementation of a low power wireless communication system that may beused to implement low-power wireless circuitry 224. In otherembodiments, other low power communication systems may be used.

High-speed circuitry 230 includes high-speed processor 232, memory 234,and high-speed wireless circuitry 236. High-speed processor 232 may beany processor capable of managing high-speed communications andoperation of any general computing system needed for camera device 210.High speed processor 232 includes processing resources needed formanaging high-speed data transfers on high-speed wireless connection 237using high-speed wireless circuitry 236. In certain embodiments, thehigh-speed processor 232 executes an operating system such as a LINUXoperating system or other such operating system such as operating system904 of FIG. 9. In addition to any other responsibilities, the high-speedprocessor 232 executing a software architecture for the camera device210 is used to manage data transfers with high-speed wireless circuitry236. In certain embodiments, high-speed wireless circuitry 236 isconfigured to implement Institute of Electrical and Electronic Engineers(IEEE) 802.11 communication standards, also referred to herein as Wi-Fi.In other embodiments, other high-speed communications standards may beimplemented by high-speed wireless circuitry 236.

Memory 234 includes any storage device capable of storing camera datagenerated by the camera 214 and video processor 212. While memory 234 isshown as integrated with high-speed circuitry 230, in other embodiments,memory 234 may be an independent standalone element of the camera device210. In certain such embodiments, electrical routing lines may provide aconnection through a chip that includes the high-speed processor 232from the video processor 212 or low-power processor 222 to the memory234. In other embodiments, the high-speed processor 232 may manageaddressing of memory 234 such that the low-power processor 222 will bootthe high-speed processor 232 any time that a read or write operationinvolving memory 234 is needed.

FIGS. 3 and 4 describe various operations that may be part of methodsaccording to certain embodiments. For clarity and convenience, method300 of FIG. 3 and method 400 of FIG. 4 will be described with respect tothe elements of system 200, and particularly with respect to cameradevice 210. In various alternative embodiments, other systems anddevices may be used to implement methods 300 and 400 and any othermethods described herein.

As shown by method 300, a camera device 210 may have an off state 302.Such an off state 302 will occur when a battery or power system ofcamera device 210 reaches a critically low level. In such an off state302, none of the elements of camera device 210 have power, and thecamera device 210 is unable to communicate with any client device 290.In operation 304, when the camera device 210 is plugged in or otherwisereceives a battery charge, the low-power circuitry 220 is booted inoperation 306. This places the camera device 210 into low-power state310.

In low-power state 310, low-power circuitry 220 performs a series ofbasic device operations. In operation 312, low-power circuitry 220determines a battery level and maintains any wireless communicationsusing low-power wireless circuitry 224. Any other low-power maintenanceoperations may also be performed, for example, powering and updating anylight emitting diode (LED) status indicators. In operation 314,low-power circuitry 220 performs a power threshold check, comparing theamount of charge in a battery against the threshold. If the batterylevel is above the power threshold, the low power circuitry 220 willcontinue performing low-power state 310 operations. If the battery levelis below the threshold, then low-power circuitry 220 will manage acomplete camera device 210 shutdown in operation 316 to transition thecamera device 210 to off state 302. Power processes of operation 316 mayinclude transmitting emergency power alerts to any local client devices290, managing memory 234 status prior to shut down, or any other suchoperations to protect the camera device 210 prior to complete loss ofpower.

In low-power state 310, maintenance operations 312 such as maintaininglow power wireless communications may be performed in a variety ofdifferent ways. For example, in certain embodiments, low-power circuitry220 may periodically transmit a service set identifier (SSID) usinglow-power wireless circuitry 224. Any local client devices 290 withappropriate access may receive the SSID and use this SSID to establishlow-power wireless connection 225. In certain embodiments, such alow-power wireless connection 225 may be maintained by an application910, service 922, or other aspects of a client device such as client 290implementing software architecture 902 in conjunction with low-powerwireless circuitry 224.

Once a connection with client device 290 is established, a variety ofcommunication operations may be performed. Firmware or software updatesto the camera device 210 may be received from the client device 290.Additionally, commands may be received at the camera device 210 from anapplication operating on the client device 290. In one embodiment, whena connection is first established, the establishing of the connectionmay be taken as a trigger or communication to automatically request atransfer of camera data to the connected client device. Alternatively, acommunication may be initiated by the client device 290 or anapplication operating on client device 290 as part of operation 320.

Once such a communication or automatic check on connection occurs inoperation 320, a new data check process 322 is performed by low-powerprocessor 222. Such a check 322 may involve comparing aspects of cameradata in memory 234 against the most recent data sent to the clientdevice 290 using details communicated to the camera device 210 inoperation 320. Such a check 322 may simply involve a record stored inthe memory 234 or another memory location within the camera device 210that keeps a history of data transfers. In other embodiments, cameradata in the memory 234 may automatically be deleted upon transfer to aclient device 290, and so the existence of any camera data within thememory 234 may be taken as an indication that new data is present andneeds to be transferred to the client device 290 connected to the cameradevice 210 by low-power wireless connection 225. If no new data ispresent or identified by the performed check 322, then the camera device210 simply resumes operations of low-power state 310.

If data to be transferred to client device 290 is identified, thenlow-power processor 222 initiates a power-on and boot of high-speedprocessor 232 in operation 324. In operation 326, high-speed processor232 is then used to power on high-speed wireless circuitry 236. Thehigh-speed processor 232 then uses the high-speed wireless circuitry 236to establish a high-speed wireless connection 237 with client device 290in operation 328. Camera data from the memory 234 is then transferredfrom the camera device 210 to the client device 290. This transfercompletes in operation 330, and then in operation 332, the high-speedprocessor 232 and the high-speed wireless circuitry 236 are bothautomatically powered down following completion of the data transfer.This power-down process is managed by low-power processor 222, andfollowing this power down in operation 332, the camera device 210returns to the low-power state 310.

While these operations of low-power state 310 transitioning to ahigh-power state for an operation at the direction of a client device290 followed by return to low-power state 310 after completion of theoperation are described here only in the context of data transfer, itwill be understood that various embodiments may implement additionaloperations on the camera device 210 which will consume power. A batteryof the camera device 210 may be designed to maintain low-power state 310for several weeks or more. Operations such as the data transferdescribed above as well as other operations that may begin fromlow-power state 310 and use additional operations may drain the batterymuch more quickly than low-power state 310. Any such operationsinitiated by a client device 290 are considered part of processes 301.According to the embodiment of method 300, any of these processes 301may be interrupted by a user input signal received from an interface216.

In state 350, a user input is received at the interface 216 of thecamera device 210. One example of a user input is a button press on abutton of the camera device 210. This user input at the interface 216generates a user input signal which is transmitted to the low-powerprocessor 222 in operation 351. In order to provide a responsiveexperience to a user that generated the action at the interface 216, lowpower processor 222, upon receiving the input signal, interrupts any ofthe processes 301 in operation 352. In operation 354, the low-powerprocessor 222 initiates a boot of video processor 212, and camera 214 isprovided power. In operation 356, the video processor 212 capturescamera data from the camera 214 and writes this camera data to memory234. The camera data captured from the camera 214 is responsive to theparticular user input received at the interface 216. If a picture isrequested, operation 356 will capture a signal image. If a video isrequested, the capturing of camera data in operation 356 will continueas long as the interface 216 indicates that the user is requestingvideo, or until the memory 234 is full.

In certain embodiments, if either low-power wireless connection 225 orhigh-speed wireless connection 237 are present when the amount of freespace in memory 234 reaches a sufficiently low level, the low-powerprocessor 222 may attempt to send a warning or error communication to aclient device 290. In other embodiments, an audio signal or otherindicator signal may provide such a warning on camera device 210.

Once the data capture and writing of the camera data to memory 234 iscomplete, any interrupted processes of processes 301 are resumed inoperation 358. In operation 360, the video processor 212 and the camera214 are powered down. Camera device 210 then returns to low-power state310.

FIG. 4 then describes another method, shown as method 400. Method 400includes a camera data capture process independent of any otheroperations of the camera device 210. In operation 402, a user input isreceived at the interface 216 of the camera device 210. In operation404, a user input signal is transmitted from the interface 216 to thelow-power processor 222.

In response to the user input signal received at the low-power processor222, the video processor 212 is booted in operation 406. In one exampleembodiment, this boot process involves the low-power processor 222sending a command to provide power to the video processor 212. Thelow-power processor 222 will then send a command for a ROM of the videoprocessor 212 to write boot instructions directly to a processor memoryof the video processor 212.

The video processor 212 may then capture first camera data from thecamera 214 in operation 408. The video processor 212 may then write thefirst camera data to the memory 234 in operation 410. In operation 412,the low power processor 222 manages the automatic power down of thevideo processor 212 after the first camera data is written to the memory234.

Method 400 limits the amount of time from receipt of the input inoperation to the capture of camera data in operation 408, while alsolimiting the amount of time spent with the video processor 212 usingpower. In certain embodiments, this time period may be 300 milliseconds,or on the order of half a second or less. Such a time delay provides auser with an experience of being able to use an interface when thecamera device is in a low power mode, while capturing data in a periodof time that is not much longer than the amount of time to press abutton. Such a system thus provides a power benefit where power usage isreduced to an extremely low level with a low-power state while stillproviding the responsiveness of an on state due to the use of thelow-power processor 222 to initiate a fast boot of the video processor212.

As illustrated by method 300, method 400 may then be followed by variousother operations. For example, after a capture of the first camera data,any number of additional data captures may be performed until the memory234 is full. Additionally, a connection with a client device 290 may bemade to transfer the first camera data to the client device 290. Duringsuch a transfer, if another user input is received, the data transfermay be interrupted for a subsequent capture of additional camera datausing operations 402 through 412. After the subsequent camera datacapture is complete, the interrupted process is resumed. All of theseprocesses, including camera data capture, data transmission, connectionto a client device, and any other such operations, may be managedautomatically by low-power processor 222, with the low-power processor222 automatically shutting down other elements of camera device 210 wheneach operation is complete in order to reduce power usage and extend thelife of a single battery charge.

FIGS. 5 and 6 then illustrate two additional embodiments of glasseswhich include display systems. In various different embodiments, suchdisplay systems may be integrated with the camera devices discussedabove, or may be implemented as wearable devices without an integratedcamera. In embodiments without a camera, power conservation systems andmethods continue to operate for the display system and other suchsystems in a manner similar to what is described above for the videoprocessor and data transfer elements of the camera devices.

FIG. 5 illustrates glasses 561 having an integrated display 531. Theglasses 561 can be of any suitable type, including glasses 31, and likereference numerals have been used to describe like components of glasses561 and 31. For simplicity, only a portion of the glasses 561 are shownin FIG. 5. Headwear or glasses 561 can optionally include left and rightoptical lenses 562, 563 secured within respective left and right opticalelement holders 36, 37. The glasses 561 can additionally include anysuitable left and right optical elements or assemblies 566, which can besimilar to any of the optical elements or assemblies discussed hereinincluding optical elements 43, 44 of glasses 31. Although only oneoptical assembly 566 is shown in FIG. 5, it is appreciated that anoptical assembly 566 can be provided for both eyes of the user.

In one embodiment, the optical assembly 566 includes any suitabledisplay matrix 567. Such a display matrix 567 can be of any suitabletype, such as a liquid crystal display (LCD), an organic light-emittingdiode (OLED) display, or any other such display. The optical assembly566 also includes an optical layer or layers 568, which can be includelenses, optical coatings, prisms, mirrors, waveguides, and other opticalcomponents in any combination. In the embodiment illustrated in FIG. 5,the optical layer 568 is a prism having a suitable size andconfiguration and including a first surface 571 for receiving light fromdisplay matrix 567 and a second surface 572 for emitting light to theeye of the user. The prism extends over all or at least a portion of theoptical element holder 36, 37 so to permit the user to see the secondsurface 572 of the prism when the eye of the user is viewing through thecorresponding optical element holder 36. The first surface 571 facesupwardly from the frame 32 and the display matrix 567 overlies the prismso that photons and light emitted by the display matrix 567 impinge thefirst surface 571. The prism is sized and shaped so that the light isrefracted within the prism and is directed towards the eye of the userby the second surface 572. In this regard, the second surface 572 can beconvex so as to direct the light towards the center of the eye. Theprism can optionally be sized and shaped so as to magnify the imageprojected by the display matrix 567, and the light travels through theprism so that the image viewed from the second surface 572 is larger inone or more dimensions than the image emitted from the display matrix567.

Glasses 561 can include any suitable computing system, including any ofthe computing devices disclosed herein, such as computer 61 or machine1100. In the embodiment of FIG. 5, computer 576 powered by a suitablerechargeable battery (not shown), which can be similar to battery 62, isprovided. Computer 576 can receive a data stream from one or more imagesensors 577, which may be similar to camera 69, with image sensors 577positioned such that the image sensor 577 senses the same scene as aneye of a wearer of glasses 561. Additional sensors, such asoutwardly-facing geometry sensor 578, can be used for any suitablepurpose, including the scanning and capturing of three-dimensionalgeometry that may be used by computer 576 with data from image sensors577 to provide information via digital display matrix 567.

Computer 576 is implemented using the processor elements of the cameradevice 210, including video processor 212, high-speed circuitry 230, andlow-power circuitry 220. Computer 576 may additionally include anycircuitry needed to power and process information for display matrix567, which may be similar to display 211. In certain embodiments, videoprocessor 212 or high-speed processor 232 may include circuitry to drivedisplay matrix 567. In other embodiments, separate display circuitry maybe integrated with the other elements of computer 576 to enablepresentation of images on display matrix 567.

FIG. 6 illustrates another example embodiment, shown as glasses 691,having another implementation of a display. Just as with glasses 561,glasses 691 can be of any suitable type, including glasses 31, andreference numerals have again been used to describe like components ofglasses 691 and 561. Glasses 691 include optical lenses 692 securedwithin each of the left and right optical element holders 36, 37. Thelens 692 has a front surface 693 and an opposite rear surface 694. Theleft and right end portions 41,42 of the frame front piece 33 caninclude respective left and right frame extensions 696, 697 that extendrearward from the respective end portions 41, 42. Left and right templepieces 46, 47 are provided, and can either be fixedly secured torespective frame extensions 696, 697 or removably attachable to therespective frame extensions 696, 697. In one embodiment, any suitableconnector mechanism 698 is provided for securing the temple pieces 46,47 to the respective frame extension 696, 697.

Glasses 691 includes computer 601, and just as with computer 576,computer 601 may be implemented using the processor elements of cameradevice 210, including video processor 212, high-speed circuitry 230, andlow-power circuitry 220, and computer 601 may additionally include anycircuitry needed to power and process information for the integrateddisplay elements.

Sensors 602 include one or more cameras, which may be similar to camera214 and/or other digital sensors that face outward, away from the user.The data feeds from these sensors 602 go to computer 601. In theembodiment of FIG. 6 the computer 601 is disposed within the firstportion 51 of right temple piece 47, although the computer 601 could bedisposed elsewhere in alternative embodiments. In the embodiment of FIG.6, right temple piece 47 includes removable cover section 603 for accessto computer 601 or other electronic components of glasses 691.

Glasses 691 include optical elements or assemblies 605, which may besimilar to any other optical elements or assemblies described herein.One optical assembly 605 is shown, but in other embodiments, opticalassemblies may be provided for both eyes of a user. Optical assembly 605includes laser projector 607, which is a three-color laser projectorusing a scanning mirror or galvanometer. During operation, an opticalsource such as a laser projector is disposed in one of the arms ortemples of the glasses, and is shown in right temple piece 47 of glasses691. The computer 601 connects to the laser projector 607. The opticalassembly 605 includes one or more optical strips 611. The optical strips611 are spaced apart across the width of lens 692, as illustrated bylens 692 in right optical element holder 37 of FIG. 6. In otherembodiments, the optical strips 611 may be spaced apart across a depthof the lens 692 between the front surface 693 and the rear surface 694of lens 692 as shown in the partial view of lens 692 in the top cornerof FIG. 6.

During operation, computer 601 sends data to laser projector 607. Aplurality of light paths 612 are depicted, showing the paths ofrespective photons emitted by the laser projector 607. The path arrowsillustrate how lenses or other optical elements direct the photons onpaths 612 that take the photons from the laser projector 607 to the lens692. As the photons then travel across the lens 692, the photonsencounter a series of optical strips 611. When a particular photonencounters a particular optical strip 611, it is either redirectedtowards the user's eye, or it passes to the next optical strip 611.Specific photons or beams of light may be controlled by a combination ofmodulation of laser projector 607 and modulation of optical strips 611.Optical strips 611 may, in certain embodiments, be controlled throughmechanical, acoustic, or electromagnetic signals initiated by computer601.

In one example implementation of the optical strips 611, each strip 611can use Polymer Dispersed Liquid Crystal to be opaque or transparent ata given instant of time, per software command from computer 601. In adifferent example implementation of the optical strips 611, each opticalstrip 611 can have a specific wavelength of light that it redirectstoward the user, passing all the other wavelengths through to the nextoptical strip 611. In a different example implementation of the opticalstrips 611, each strip 611 can have certain regions of the strip 611that cause redirection with other regions passing light, and the laserprojector 607 can use high precision steering of the light beams totarget the photons at the desired region of the particular intendedoptical strip 611.

In the embodiment of lens 692 illustrated in the top left of FIG. 6,optical strips 611 are disposed in and spaced apart along the width of afirst layer 616 of the lens 692, which is secured in a suitable mannerto a second layer 617 of the lens 692. In one embodiment, the frontsurface 693 is formed by the second layer 617 and the rear surface 694is formed by the first layer 616. The second layer 617 can be providedwith reflective coatings on at least a portion of the surfaces thereofso that the laser light bounces off such surfaces so as to travel alongthe layer 617 until the light encounters a strip 611 provided in thefirst layer 616, and is either redirected towards the eye of the user orcontinues on to the next strip 611 in the manner discussed above.

FIG. 7 is a flow diagram illustrating aspects of a camera deviceoperation according to some example embodiments, shown in FIG. 7 asmethod 700. For the purposes of illustration, just as with method 300 ofFIG. 3, method 700 is described with respect to system 200. It will beapparent that other systems, devices, or elements in various differentcombinations may also be used to implement method 700. Method 700illustrates off state 702, which may occur when a camera device 210 hasno power. When the camera device 210 receives power in operation 704,low-power processor 222 is booted along with low-power wirelesscircuitry 224 as part of low-power circuitry 220. This places the cameradevice 210 in low-power state 710. As part of standard operations inlow-power state 710, operation 712 includes battery tracking andmaintenance of low-power wireless connections 225 with client devices290, which are in proximity of the camera device 210. If the batterypower is below a certain threshold identified in operation 714, shutdownprocess may occur in operation 716 to return the camera device 210 tooff state 702.

During the standard operation 712 of low-power state 710, if the cameradevice 210 is connected with a client device 290, the camera device 210may use the low-power processor 222 and low-power wireless circuitry 224to communicate a battery state to the client device 290. An applicationoperating on the client device 290 may present this battery stateinformation to the user. Similarly, operation 712 may monitor memory 234details including content present in the memory 234 and an availableamount of memory within the memory 234. This information may also becommunicated to the client device 290 during low-power state 710operations of low-power circuitry 220.

In operation 720, the camera device 210 receives a communication fromthe client device 290 with an instruction to display information on adisplay 211 of the camera device 210. Such a display communication maybe initiated by any application such as any application 910 operating ona client device 290 which is implementing some or all of softwarearchitecture 902. For example, location application 958 may includesystems for providing map information and directions to a user of clientdevice 290. As part of the operation of the location application 958,visual direction information may be sent to the camera device 210 usingcamera device application 967. This direction information may beinitiated when camera device application 967 and location application958 determine that a low-power wireless connection 225 exists betweenthe client device 290 and camera device 210. In certain embodiments,user settings input to a user interface of client device 290 may be usedto determine when the camera device application 967 will provide such avisual direction information to the camera device 210. Other embodimentsmay provide visual messages to the camera device 210 using a messagingapplication 962. Still further embodiments may provide visual gameinformation, book information, web browser information, contactsinformation, images or videos, or any other such content data as part ofany application 910.

After the initial display communication is received from an applicationoperating on client device 290 in operation 720, the low-power processor222 boots high-speed processor 232 in operation 722. In operation 724,the camera device 210 then determines whether or not the data associatedwith the display communication is already present in the memory 234 ofcamera device 210, or whether this information needs to be retrieved.This determination may be made by logic elements of low-power processor222, by logic operating on high-speed processor 232, or by any otherlogic operating on the camera device 210. In other embodiments, theinitial display communication from the client device 290 may identify asource of the content to be presented on the display 211.

If the camera device 210 determines that the data is not present in thememory 234 or anywhere else on the camera device 210, then in operation726, the high-speed processor 232 turns on the high-speed wirelesscircuitry 236. In operation 728, the client device 290 connects to thehigh-speed wireless circuitry 236 to form high-speed wireless connection237. Transfer of the data is completed in operation 730 using high-speedwireless connection 237. After the data is transferred, high-speedwireless circuitry 236 is powered down in operation 732. In operation734, high-speed processor 232 then loads the retrieved data for displayin operation 734. Operation 734 will also occur immediately afteroperation 724 if the camera device 210 determines that the data fordisplay on the display 211 is already present in the memory 234.

In operation 736, the display 211 is powered on. While the method 700shows operation 736 occurring serially after data is transferred andhigh-speed wireless circuitry 236 powered down when the data istransferred from client device 290, in certain embodiments, the data maybe streamed such that the display 211 turns on in operation 736 and thesubsequent display operations occur while data is being transferred fromthe client device 292 camera device 210 using high-speed wirelessconnection 237.

After the display 211 is turned on in operation 736, the display 211presents the data for a set period of time in operation 738. Forexample, if direction information is being displayed on display 211, thesystem 200 will determine that the direction information is to bedisplayed for a fixed period of time, for example five seconds. Afterthe information has been displayed for the predetermined amount of time,the display 211 is automatically powered off in operation 740. Thehigh-speed processor 232 is then powered down in operation 742 after thedisplay of data is complete, and the camera device 210 returns tolow-power state 710 where the display 211 is powered down, thehigh-speed circuitry 230 is powered down, and the low-power circuitry220 is maintaining low-power wireless communications and batterymonitoring as well as any other low-power processes.

In certain embodiments, the set period of time for data display may bedetermined in conjunction with other applications operating on theclient device 290. For example, in the location data embodiment, apositioning system operating on either client device 290 or cameradevice 210 may determine that the physical location of the user isapproaching a location associated with a direction. This may, forexample, be an instruction for the user to make a turn or to otherwisefollow a set of directions. The location data being presented on thedisplay 211 may include map information or text information promptingthe user to follow the path presented by the direction information. Oncethe user has follow the directions, and the positioning systemdetermines that the direction has been followed, the informationdisplayed on display 211 may be removed, and the system 200 may returnto low-power state 710 in response to this determination. In otherembodiments, other such triggers from various applications 910 may beused to determine the display time. In each instance, following thedisplay time, the display 211 will be powered down and the camera device210 will return to low-power state 710.

FIG. 7 further identifies a set of processes 701. As described by method300, embodiments of method 700 may be interrupted by other priorityprocesses. For example, if the interface 216 receives the user input atany time during any of the processes 701, these processes 701 may beinterrupted, with camera data capture prioritized over the processes701. The method 700 may thus be integrated with any of the operations ofmethod 300, including operations 351 through 360, where the userexperience of responsive image or video capture following the buttonpress or another action with a user interface 216 is prioritized overother operations.

FIG. 8 then describes an additional embodiment, shown as method 800. Forthe purpose of illustration, method 800 is also described with respectto system 200. In other embodiments, method 800 may be implemented usingother systems or combinations of any elements described herein indifferent structures. Method 800 begins with operation 801 establishinga low-power wireless connection 225 between low-power wireless circuitry224 and client device 290. In operation 802, a communication is receivedat the camera device 210 instructing the camera device 210 to presentcontent data on the display 211. In operation 804, the communication isprocessed by low-power processor 222. In response to the processing ofthe communication, in operation 806, high-speed processor 232 is booted.Content to be presented on the display 211 is identified in operation808, and is accessed either by retrieving content data from the memory234 or by activating high-speed wireless circuitry 236 to retrieve thecontent data from the client device 290 using high-speed wirelessconnection 237. High-speed processor 232 determines a first period oftime for display of content data on display 211. This first period oftime may be a predetermined fixed number, or may be determined by sensordata, and the client device 290 is then communicated to camera device210. In operation 812, display 211 is powered on, and the content datais displayed on the display 211 for the first period of time. After thefirst period of time, in operation 814 the display 211 and thehigh-speed processor 232 are powered down.

While the methods described above present operations in a particularorder, it will be appreciated that alternate embodiments may operatewith certain operations occurring simultaneously or in a differentorder. In many such embodiments, the order and timing of operations mayvary between instances of the operation, with the exact timing managedby a low-power processor such as the low-power processor 222 operatingto reduce power usage, and to return the device to a low-power state asquickly as possible.

Certain embodiments are described herein as including logic or a numberof components, modules, elements, or mechanisms. Such modules canconstitute either software modules (e.g., code embodied on amachine-readable medium or in a transmission signal) or hardwaremodules. A “hardware module” is a tangible unit capable of performingcertain operations and can be configured or arranged in a certainphysical manner. In various example embodiments, one or more computersystems (e.g., a standalone computer system, a client computer system,or a server computer system) or one or more hardware modules of acomputer system (e.g., a processor or a group of processors) isconfigured by software (e.g., an application or application portion) asa hardware module that operates to perform certain operations asdescribed herein.

In some embodiments, a hardware module is implemented mechanically,electronically, or any suitable combination thereof. For example, ahardware module can include dedicated circuitry or logic that ispermanently configured to perform certain operations. For example, ahardware module can be a special-purpose processor, such as aField-Programmable Gate Array (FPGA) or an Application SpecificIntegrated Circuit (ASIC). A hardware module may also includeprogrammable logic or circuitry that is temporarily configured bysoftware to perform certain operations. For example, a hardware modulecan include software encompassed within a general-purpose processor orother programmable processor. It will be appreciated that the decisionto implement a hardware module mechanically, in dedicated andpermanently configured circuitry, or in temporarily configured circuitry(e.g., configured by software) can be driven by cost and timeconsiderations.

Accordingly, the phrase “hardware module” should be understood toencompass a tangible entity, be that an entity that is physicallyconstructed, permanently configured (e.g., hardwired), or temporarilyconfigured (e.g., programmed) to operate in a certain manner or toperform certain operations described herein. As used herein,“hardware-implemented module” refers to a hardware module. Consideringembodiments in which hardware modules are temporarily configured (e.g.,programmed), each of the hardware modules need not be configured orinstantiated at any one instance in time. For example, where a hardwaremodule comprises a general-purpose processor configured by software tobecome a special-purpose processor, the general-purpose processor may beconfigured as respectively different special-purpose processors (e.g.,comprising different hardware modules) at different times. Software canaccordingly configure a particular processor or processors, for example,to constitute a particular hardware module at one instance of time andto constitute a different hardware module at a different instance oftime.

Hardware modules can provide information to, and receive informationfrom, other hardware modules. Accordingly, the described hardwaremodules can be regarded as being communicatively coupled. Where multiplehardware modules exist contemporaneously, communications can be achievedthrough signal transmission (e.g., over appropriate circuits and buses)between or among two or more of the hardware modules. In embodiments inwhich multiple hardware modules are configured or instantiated atdifferent times, communications between such hardware modules may beachieved, for example, through the storage and retrieval of informationin memory structures to which the multiple hardware modules have access.For example, one hardware module performs an operation and stores theoutput of that operation in a memory device to which it iscommunicatively coupled. A further hardware module can then, at a latertime, access the memory device to retrieve and process the storedoutput. Hardware modules can also initiate communications with input oroutput devices, and can operate on a resource (e.g., a collection ofinformation).

The various operations of example methods described herein can beperformed, at least partially, by one or more processors that aretemporarily configured (e.g., by software) or permanently configured toperform the relevant operations. Whether temporarily or permanentlyconfigured, such processors constitute processor-implemented modulesthat operate to perform one or more operations or functions describedherein. As used herein, “processor-implemented module” refers to ahardware module implemented using one or more processors.

Similarly, the methods described herein can be at least partiallyprocessor-implemented, with a particular processor or processors beingan example of hardware. For example, at least some of the operations ofa method can be performed by one or more processors orprocessor-implemented modules. Moreover, the one or more processors mayalso operate to support performance of the relevant operations in a“cloud computing” environment or as a “software as a service” (SaaS).For example, at least some of the operations may be performed by a groupof computers (as examples of machines including processors), with theseoperations being accessible via a network (e.g., the Internet) and viaone or more appropriate interfaces (e.g., an Application ProgramInterface (API)).

The performance of certain of the operations may be distributed amongthe processors, not only residing within a single machine, but deployedacross a number of machines. In some example embodiments, the processorsor processor-implemented modules are located in a single geographiclocation (e.g., within a home environment, an office environment, or aserver farm). In other example embodiments, the processors orprocessor-implemented modules are distributed across a number ofgeographic locations.

FIG. 9 is a block diagram 900 illustrating an architecture of software902, which can be installed on any one or more of the devices describedabove. FIG. 9 is merely a non-limiting example of a softwarearchitecture, and it will be appreciated that many other architecturescan be implemented to facilitate the functionality described herein. Invarious embodiments, the software 902 is implemented by hardware such asmachine a 1100 of FIG. 11 that includes processors 1110, memory 1130,and I/O components 1150. In this example architecture, the software 902can be conceptualized as a stack of layers where each layer may providea particular functionality. For example, the software 902 includeslayers such as an operating system 904, libraries 906, frameworks 908,and applications 910. Operationally, the applications 910 invokeapplication programming interface (API) calls 912 through the softwarestack and receive messages 914 in response to the API calls 912,consistent with some embodiments. In various embodiments, any clientdevice 290, server computer of a server system 298, or any other devicedescribed herein may operate using elements of software 902. Devicessuch as the camera device 210 may additionally be implemented usingaspects of software 902, with the architecture adapted for operatingusing low-power circuitry (e.g., low-power circuitry 220) and high-speedcircuitry (e.g., high-speed circuitry 230) as described herein.

In various implementations, the operating system 904 manages hardwareresources and provides common services. The operating system 904includes, for example, a kernel 920, services 922, and drivers 924. Thekernel 920 acts as an abstraction layer between the hardware and theother software layers consistent with some embodiments. For example, thekernel 920 provides memory management, processor management (e.g.,scheduling), component management, networking, and security settings,among other functionality. The services 922 can provide other commonservices for the other software layers. The drivers 924 are responsiblefor controlling or interfacing with the underlying hardware, accordingto some embodiments. For instance, the drivers 924 can include displaydrivers, camera drivers, BLUETOOTH® or BLUETOOTH® Low Energy drivers,flash memory drivers, serial communication drivers (e.g., UniversalSerial Bus (USB) drivers), WI-FI® drivers, audio drivers, powermanagement drivers, and so forth. In certain implementations of a devicesuch as the camera device 210, low-power circuitry may operate usingdrivers 924 that only contain BLUETOOTH® Low Energy drivers and basiclogic for managing communications and controlling other devices, withother drivers operating with high-speed circuitry.

In some embodiments, the libraries 906 provide a low-level commoninfrastructure utilized by the applications 910. The libraries 906 caninclude system libraries 930 (e.g., C standard library) that can providefunctions such as memory allocation functions, string manipulationfunctions, mathematic functions, and the like. In addition, thelibraries 906 can include API libraries 932 such as media libraries(e.g., libraries to support presentation and manipulation of variousmedia formats such as Moving Picture Experts Group-4 (MPEG4), AdvancedVideo Coding (H.264 or AVC), Moving Picture Experts Group Layer-3 (MP3),Advanced Audio Coding (AAC), Adaptive Multi-Rate (AMR) audio codec,Joint Photographic Experts Group (JPEG or JPG), or Portable NetworkGraphics (PNG)), graphics libraries (e.g., an OpenGL framework used torender in two dimensions (2D) and three dimensions (3D) in a graphiccontent on a display), database libraries (e.g., SQLite to providevarious relational database functions), web libraries (e.g., WebKit toprovide web browsing functionality), and the like. The libraries 906 canalso include a wide variety of other libraries 934 to provide many otherAPIs to the applications 910.

The frameworks 908 provide a high-level common infrastructure that canbe utilized by the applications 910, according to some embodiments. Forexample, the frameworks 908 provide various graphic user interface (GUI)functions, high-level resource management, high-level location services,and so forth. The frameworks 908 can provide a broad spectrum of otherAPIs that can be utilized by the applications 910, some of which may bespecific to a particular operating system or platform.

In an example embodiment, the applications 910 include a homeapplication 950, a contacts application 952, a browser application 954,a book reader application 956, a location application 958, a mediaapplication 960, a messaging application 962, a game application 964,and a broad assortment of other applications such as a third partyapplication 966. According to some embodiments, the applications 910 areprograms that execute functions defined in the programs. Variousprogramming languages can be employed to create one or more of theapplications 910, structured in a variety of manners, such asobject-oriented programming languages (e.g., Objective-C, Java, or C++)or procedural programming languages (e.g., C or assembly language). In aspecific example, the third party application 966 (e.g., an applicationdeveloped using the ANDROID™ or IOS™ software development kit (SDK) byan entity other than the vendor of the particular platform) may bemobile software running on a mobile operating system such as IOS™,ANDROID™, WINDOWS® Phone, or another mobile operating systems. In thisexample, the third party application 966 can invoke the API calls 912provided by the operating system 904 to facilitate functionalitydescribed herein.

Embodiments described herein may particularly interact with a cameradevice application 967. Such an application 967 may interact with 110components 1150 to establish various wireless connections with devicessuch as the camera device 210, and to present details of the cameradevice 210 to a user of the machine 1100. Camera device application 967may communicate with the camera device 210 to automatically request thatcamera data be transferred from the camera device 210 to the machine1100. For example, when camera device application 967 is first opened onthe machine 1100, the application 967 may automatically check for theavailability of a low-power wireless connection 225 to the camera device210. If no such connection 225 is available, the camera deviceapplication 967 may still provide additional functionality, for exampleoperating as a social network communication application with images orvideo that have either been previously downloaded from the camera device210 or captured a camera of client device 290. If, however, low-powerwireless connection 225 is available when camera device application 967is first started, then the camera device application 967 checks to seeif files need to be transferred from the camera device 210 to themachine 1100. If not, the camera device application 967 may send acommunication over the low-power wireless connection 225 instructing thecamera device 210 to maintain a low power state. If camera data isavailable on the camera device 210 for transfer to the machine 1100, thecamera device application 967 checks to see if a high-speed wirelessconnection 237 is also available to the camera device 210. If no suchconnection 237 is available, the camera device application 967 mayprompt the user to enable such a connection using settings of themachine 1100. The camera device application 967 may then continuechecking for the availability of a high-speed wireless connection 237.When such a connection 237 is available on the machine 1100, cameradevice application 967 sends instructions to the camera device 210 toturn on the high-speed wireless circuitry 236. If a connection isunsuccessful, the camera device application 967 continues attempting toconnect via high-speed wireless connection 237, and may instruct thecamera device 210 to turn off high-speed wireless circuitry 236 until anew high-speed wireless connection is available. If a connection issuccessful between the camera device 210 and machine 1100, the data istransferred to the machine 1100 and the camera device application 967then instructs the camera device 210 to return to a low-power mode. Sucha connection method relies on and is controlled by camera deviceapplication 967 operating on the machine 1100.

In alternate embodiments, such a connection may be managed andcontrolled by the camera device 210 communicating with the machine 1100operating as a client device 290 in a system 200. In such an embodiment,when camera device 210 captures camera data, the data is stored tomemory 234, and the low-power processor 222 may check to see if alow-power wireless connection 225 is available. If not, the cameradevice 210 maintains a low-power state with periodic checks for alow-power wireless connection 225. If a low-power wireless connection225 is available when a check is performed by low-power processor 222,the low-power processor 222 may communicate a request to client device290 asking whether low-power processor 222 should turn on high-speedwireless circuitry 236. If no response or a negative response isreceived from client device 290 operating a camera device application967, then the camera device 210 maintains a low-power state. If aresponse is received from camera device application 967 indicating thathigh-speed wireless circuitry 236 should be turned on, then high-speedprocessor 232 and high-speed wireless circuitry 236 are turned on. Anattempt for a high-speed wireless connection 237 is made. If the attemptto establish the high-speed wireless connection 237 is unsuccessfulafter a certain number of tries or certain period of time, the cameradevice 210 will return to a low-power state. If the high-speed wirelessconnection 237 is successful, the files are transferred, and uponcompletion of file transfer, the high-speed circuitry 230 is turned offand camera device 210 returns to a low-power state.

Thus, in various embodiments, either a camera device or an associatedclient device may initiate a data transfer. Additionally, in certainembodiments, the camera device application 967 may work with any otherapplication described herein to manage communication of camera data anddisplay content data with the camera device 210, or to perform variousoperations compatible with particular embodiments.

FIG. 10 illustrates an example mobile device 1000 executing a mobileoperating system (e.g., IOS™, ANDROID™, WINDOWS® Phone, or other mobileoperating systems), consistent with some embodiments. In one embodiment,the mobile device 1000 includes a touch screen operable to receivetactile data from a user. For instance, the user may physically touchthe mobile device 1000, and in response to the touch, the mobile device1000 may determine tactile data such as touch location, touch force, orgesture motion. In various example embodiments, the mobile device 1000displays a home screen operable to launch applications or otherwisemanage various aspects of the mobile device 1000. In some exampleembodiments, the home screen provides status information such as batterylife, connectivity, or other hardware statuses. The user can activateuser interface elements by touching an area occupied by a respectiveuser interface element. In this manner, the user interacts with theapplications of the mobile device 1000. For example, touching the areaoccupied by a particular icon included in the home screen causeslaunching of an application corresponding to the particular icon.

Many varieties of applications (also referred to as “apps”) can beexecuting on the mobile device 1000, such as native applications (e.g.,applications programmed in Objective-C, Swift, or another suitablelanguage running on IOS™, or applications programmed in Java running onANDROID™), mobile web applications (e.g., applications written inHypertext Markup Language-5 (HTML5)), or hybrid applications (e.g., anative shell application that launches an HTML5 session). For example,the mobile device 1000 includes a messaging app, an audio recording app,a camera app, a book reader app, a media app, a fitness app, a filemanagement app, a location app, a browser app, a settings app, acontacts app, a telephone call app, or other apps (e.g., gaming apps,social networking apps, biometric monitoring apps). In another example,the mobile device 1000 includes a social messaging app such as SNAPCHAT®that, consistent with some embodiments, allows users to exchangeephemeral messages that include media content. In this example, thesocial messaging app can incorporate aspects of embodiments describedherein.

Such a social messaging application may integrate the functionality ofthe camera device application 967 to automatically integrate camera datafrom the camera device 210 into the social messaging application. Mobiledevice 1000 of FIG. 10 shows an example user interface for display ofcamera data 1001 from camera device 210 on mobile device 1000. Cameradata 1001 is shown as displayed on a screen of mobile device 1000, alongwith option data 1002. Each content element, including camera data 1001,is displayed on the screen of mobile device 1000 in order. Option data1002 may include details from camera device 210 such as a date and timeof capture, or other information about the images. User interaction withthe camera data 1001 on the mobile device 1000 may be used to process ormodify the camera data 1001. Swiping up or down on the screen of mobiledevice 1000 may scroll through different images or videos from cameradevice 210 or a combination of camera data from camera device 210 andmobile device 1000. Swiping to one side of the display may deleteparticular camera data 1001, and swiping to the other side may presentadditional options for communicating the camera data 1001 via a networkto other devices or users.

When mobile device 1000 connects with a camera device 210 to downloadcamera data 1001 from the camera device 210, the list of data includingcamera data 1001 may be updated to include new images and videos fromcamera device 210. Additionally, the mobile device 1000 may include auser interface that receives status information from the camera device210, including battery data, memory use data, or any other such statusinformation available from the camera device 210.

FIG. 11 is a block diagram illustrating components of a machine 1100,according to some embodiments, able to read instructions from amachine-readable medium (e.g., a machine-readable storage medium) andperform any one or more of the methodologies discussed herein.Specifically, FIG. 11 shows a diagrammatic representation of the machine1100 in the example form of a computer system, within which instructions1116 (e.g., software, a program, an application, an applet, an app, orother executable code) for causing the machine 1100 to perform any oneor more of the methodologies discussed herein can be executed. Inalternative embodiments, the machine 1100 operates as a standalonedevice or can be coupled (e.g., networked) to other machines. In anetworked deployment, the machine 1100 may operate in the capacity of aserver machine or a client machine in a server-client networkenvironment, or as a peer machine in a peer-to-peer (or distributed)network environment. The machine 1100 can comprise, but not be limitedto, a server computer, a client computer, a personal computer (PC), atablet computer, a laptop computer, a netbook, a set-top box (STB), apersonal digital assistant (PDA), an entertainment media system, acellular telephone, a smart phone, a mobile device, a wearable device(e.g., a smart watch), a smart home device (e.g., a smart appliance),other smart devices, a web appliance, a network router, a networkswitch, a network bridge, or any machine capable of executing theinstructions 1116, sequentially or otherwise, that specify actions to betaken by the machine 1100. Further, while only a single machine 1100 isillustrated, the term “machine” shall also be taken to include acollection of machines 1100 that individually or jointly execute theinstructions 1116 to perform any one or more of the methodologiesdiscussed herein.

In various embodiments, the machine 1100 comprises processors 1110,memory 1130, and I/O components 1150, which can be configured tocommunicate with each other via a bus 1102. In an example embodiment,the processors 1110 (e.g., a Central Processing Unit (CPU), a ReducedInstruction Set Computing (RISC) processor, a Complex Instruction SetComputing (CISC) processor, a Graphics Processing Unit (GPU), a DigitalSignal Processor (DSP), an Application Specific Integrated Circuit(ASIC), a Radio-Frequency Integrated Circuit (RFIC), another processor,or any suitable combination thereof) include, for example, a processor1112 and a processor 1114 that may execute the instructions 1116. Theterm “processor” is intended to include multi-core processors that maycomprise two or more independent processors (also referred to as“cores”) that can execute instructions contemporaneously. Although FIG.11 shows multiple processors 1110, the machine 1100 may include a singleprocessor with a single core, a single processor with multiple cores(e.g., a multi-core processor), multiple processors with a single core,multiple processors with multiples cores, or any combination thereof.

The memory 1130 comprises a main memory 1132, a static memory 1134, anda storage unit 1136 accessible to the processors 1110 via the bus 1102,according to some embodiments. The storage unit 1136 can include amachine-readable medium 1138 on which are stored the instructions 1116embodying any one or more of the methodologies or functions describedherein. The instructions 1116 can also reside, completely or at leastpartially, within the main memory 1132, within the static memory 1134,within at least one of the processors 1110 (e.g., within the processor'scache memory), or any suitable combination thereof, during executionthereof by the machine 1100. Accordingly, in various embodiments, themain memory 1132, the static memory 1134, and the processors 1110 areconsidered machine-readable media 1138.

As used herein, the term “memory” refers to a machine-readable medium1138 able to store data temporarily or permanently and may be taken toinclude, but not be limited to, random-access memory (RAM), read-onlymemory (ROM), buffer memory, flash memory, and cache memory. While themachine-readable medium 1138 is shown in an example embodiment to be asingle medium, the term “machine-readable medium” should be taken toinclude a single medium or multiple media (e.g., a centralized ordistributed database, or associated caches and servers) able to storethe instructions 1116. The term “machine-readable medium” shall also betaken to include any medium, or combination of multiple media, that iscapable of storing instructions (e.g., instructions 1116) for executionby a machine (e.g., machine 1100), such that the instructions, whenexecuted by one or more processors of the machine 1100 (e.g., processors1110), cause the machine 1100 to perform any one or more of themethodologies described herein. Accordingly, a “machine-readable medium”refers to a single storage apparatus or device, as well as “cloud-based”storage systems or storage networks that include multiple storageapparatus or devices. The term “machine-readable medium” shallaccordingly be taken to include, but not be limited to, one or more datarepositories in the form of a solid-state memory (e.g., flash memory),an optical medium, a magnetic medium, other non-volatile memory (e.g.,Erasable Programmable Read-Only Memory (EPROM)), or any suitablecombination thereof. The term “machine-readable medium” specificallyexcludes non-statutory signals per se.

The I/O components 1150 include a wide variety of components to receiveinput, provide output, produce output, transmit information, exchangeinformation, capture measurements, and so on. In general, it will beappreciated that the I/O components 1150 can include many othercomponents that are not shown in FIG. 11. The I/O components 1150 aregrouped according to functionality merely for simplifying the followingdiscussion, and the grouping is in no way limiting. In various exampleembodiments, the I/O components 1150 include output components 1152 andinput components 1154. The output components 1152 include visualcomponents (e.g., a display such as a plasma display panel (PDP), alight emitting diode (LED) display, a liquid crystal display (LCD), aprojector, or a cathode ray tube (CRT)), acoustic components (e.g.,speakers), haptic components (e.g., a vibratory motor), other signalgenerators, and so forth. The input components 1154 include alphanumericinput components (e.g., a keyboard, a touch screen configured to receivealphanumeric input, a photo-optical keyboard, or other alphanumericinput components), point-based input components (e.g., a mouse, atouchpad, a trackball, a joystick, a motion sensor, or other pointinginstruments), tactile input components (e.g., a physical button, a touchscreen that provides location and force of touches or touch gestures, orother tactile input components), audio input components (e.g., amicrophone), and the like.

In some further example embodiments, the I/O components 1150 includebiometric components 1156, motion components 1158, environmentalcomponents 1160, or position components 1162, among a wide array ofother components. For example, the biometric components 1156 includecomponents to detect expressions (e.g., hand expressions, facialexpressions, vocal expressions, body gestures, or eye tracking), measurebiosignals (e.g., blood pressure, heart rate, body temperature,perspiration, or brain waves), identify a person (e.g., voiceidentification, retinal identification, facial identification,fingerprint identification, or electroencephalogram basedidentification), and the like. The motion components 1158 includeacceleration sensor components (e.g., accelerometer), gravitation sensorcomponents, rotation sensor components (e.g., gyroscope), and so forth.The environmental components 1160 include, for example, illuminationsensor components (e.g., photometer), temperature sensor components(e.g., one or more thermometers that detect ambient temperature),humidity sensor components, pressure sensor components (e.g.,barometer), acoustic sensor components (e.g., one or more microphonesthat detect background noise), proximity sensor components (e.g.,infrared sensors that detect nearby objects), gas sensor components(e.g., machine olfaction detection sensors, gas detection sensors todetect concentrations of hazardous gases for safety or to measurepollutants in the atmosphere), or other components that may provideindications, measurements, or signals corresponding to a surroundingphysical environment. The position components 1162 include locationsensor components (e.g., a Global Positioning System (GPS) receivercomponent), altitude sensor components (e.g., altimeters or barometersthat detect air pressure from which altitude may be derived),orientation sensor components (e.g., magnetometers), and the like.

Communication can be implemented using a wide variety of technologies.The I/O components 1150 may include communication components 1164operable to couple the machine 1100 to a network 1180 or devices 1170via a coupling 1182 and a coupling 1172, respectively. For example, thecommunication components 1164 include a network interface component oranother suitable device to interface with the network 1180. In furtherexamples, communication components 1164 include wired communicationcomponents, wireless communication components, cellular communicationcomponents, Near Field Communication (NFC) components, BLUETOOTH®components (e.g., BLUETOOTH® Low Energy), WI-FI® components, and othercommunication components to provide communication via other modalities.The devices 1170 may be another machine or any of a wide variety ofperipheral devices (e.g., a peripheral device coupled via a UniversalSerial Bus (USB)).

Moreover, in some embodiments, the communication components 1164 detectidentifiers or include components operable to detect identifiers. Forexample, the communication components 1164 include Radio FrequencyIdentification (RFID) tag reader components, NFC smart tag detectioncomponents, optical reader components (e.g., an optical sensor to detecta one-dimensional bar codes such as a Universal Product Code (UPC) barcode, multi-dimensional bar codes such as a Quick Response (QR) code,Aztec Code, Data Matrix, Dataglyph, MaxiCode, PDF417, Ultra Code,Uniform Commercial Code Reduced Space Symbology (UCC RSS)-2D bar codes,and other optical codes), acoustic detection components (e.g.,microphones to identify tagged audio signals), or any suitablecombination thereof. In addition, a variety of information can bederived via the communication components 1164, such as location viaInternet Protocol (IP) geo-location, location via WI-FI® signaltriangulation, location via detecting an BLUETOOTH® or NFC beacon signalthat may indicate a particular location, and so forth.

Transmission Medium

In various example embodiments, one or more portions of the network 1180can be an ad hoc network, an intranet, an extranet, a virtual privatenetwork (VPN), a local area network (LAN), a wireless LAN (WLAN), a widearea network (WAN), a wireless WAN (WWAN), a metropolitan area network(MAN), the Internet, a portion of the Internet, a portion of the PublicSwitched Telephone Network (PSTN), a plain old telephone service (POTS)network, a cellular telephone network, a wireless network, a WI-FI®network, another type of network, or a combination of two or more suchnetworks. For example, the network 1180 or a portion of the network 1180may include a wireless or cellular network, and the coupling 1182 may bea Code Division Multiple Access (CDMA) connection, a Global System forMobile communications (GSM) connection, or another type of cellular orwireless coupling. In this example, the coupling 1182 can implement anyof a variety of types of data transfer technology, such as SingleCarrier Radio Transmission Technology (1×RTT), Evolution-Data Optimized(EVDO) technology, General Packet Radio Service (GPRS) technology,Enhanced Data rates for GSM Evolution (EDGE) technology, thirdGeneration Partnership Project (3GPP) including 3G, fourth generationwireless (4G) networks, Universal Mobile Telecommunications System(UMTS), High Speed Packet Access (HSPA), Worldwide Interoperability forMicrowave Access (WiMAX), Long Term Evolution (LTE) standard, othersdefined by various standard-setting organizations, other long rangeprotocols, or other data transfer technology.

In example embodiments, the instructions 1116 are transmitted orreceived over the network 1180 using a transmission medium via a networkinterface device (e.g., a network interface component included in thecommunication components 1164) and utilizing any one of a number ofwell-known transfer protocols (e.g., Hypertext Transfer Protocol(HTTP)). Similarly, in other example embodiments, the instructions 1116are transmitted or received using a transmission medium via the coupling1172 (e.g., a peer-to-peer coupling) to the devices 1170. The term“transmission medium” shall be taken to include any intangible mediumthat is capable of storing, encoding, or carrying the instructions 1116for execution by the machine 1100, and includes digital or analogcommunications signals or other intangible media to facilitatecommunication of such software.

Furthermore, the machine-readable medium 1138 is non-transitory (inother words, not having any transitory signals) in that it does notembody a propagating signal. However, labeling the machine-readablemedium 1138 “non-transitory” should not be construed to mean that themedium is incapable of movement; the medium 1138 should be considered asbeing transportable from one physical location to another. Additionally,since the machine-readable medium 1138 is tangible, the medium 1138 maybe considered to be a machine-readable device.

Language

Throughout this specification, plural instances may implementcomponents, operations, or structures described as a single instance.Although individual operations of one or more methods are illustratedand described as separate operations, one or more of the individualoperations may be performed concurrently, and nothing requires that theoperations be performed in the order illustrated. Structures andfunctionality presented as separate components in example configurationsmay be implemented as a combined structure or component. Similarly,structures and functionality presented as a single component may beimplemented as separate components. These and other variations,modifications, additions, and improvements fall within the scope of thesubject matter herein.

Although an overview of the inventive subject matter has been describedwith reference to specific example embodiments, various modificationsand changes may be made to these embodiments without departing from thebroader scope of embodiments of the present disclosure. Such embodimentsof the inventive subject matter may be referred to herein, individuallyor collectively, by the term “invention” merely for convenience andwithout intending to voluntarily limit the scope of this application toany single disclosure or inventive concept if more than one is, in fact,disclosed.

The embodiments illustrated herein are described in sufficient detail toenable those skilled in the art to practice the teachings disclosed.Other embodiments may be used and derived therefrom, such thatstructural and logical substitutions and changes may be made withoutdeparting from the scope of this disclosure. The Detailed Description,therefore, is not to be taken in a limiting sense, and the scope ofvarious embodiments is defined only by the appended claims, along withthe full range of equivalents to which such claims are entitled.

As used herein, the term “or” may be construed in either an inclusive orexclusive sense. Moreover, plural instances may be provided forresources, operations, or structures described herein as a singleinstance. Additionally, boundaries between various resources,operations, modules, engines, and data stores are somewhat arbitrary,and particular operations are illustrated in a context of specificillustrative configurations. Other allocations of functionality areenvisioned and may fall within a scope of various embodiments of thepresent disclosure. In general, structures and functionality presentedas separate resources in the example configurations may be implementedas a combined structure or resource. Similarly, structures andfunctionality presented as a single resource may be implemented asseparate resources. These and other variations, modifications,additions, and improvements fall within a scope of embodiments of thepresent disclosure as represented by the appended claims. Thespecification and drawings are, accordingly, to be regarded in anillustrative rather than a restrictive sense.

What is claimed is:
 1. A first device comprising: processing circuitry;and first wireless circuitry coupled to the processing circuitry, thefirst wireless circuitry configured to: establish a wireless connectionusing the first wireless circuitry with a second device; receive, fromthe second device via the wireless connection, an instruction to displaycontent data on the first device; in response to receiving theinstruction to display the content data, communicate a power-on query tothe second device via the wireless connection; receive a response fromthe second device comprising instructions indicating to power onprocessing circuitry; and initiate booting the processing circuitry inresponse to the response from the second device.
 2. The first device ofclaim 1 further comprising: second wireless circuitry coupled to thefirst wireless circuitry, wherein the processing circuitry is configuredto: power on the second wireless circuitry; establish a second wirelessconnection using the second wireless circuitry with the second device;and in response to establishing the second wireless connection, receivethe content data from the second device using the second wirelessconnection.
 3. The first device of claim 2 wherein the processingcircuitry is further configured to: power on a display of the firstdevice; display, using the display on the first device, the content datareceived from the second device for a first period of time.
 4. The firstdevice of claim 3, where the processing circuitry is further configuredto: turn off the display following display of the content data for thefirst period of time; and turn off the processing circuitry followingdisplay of the content data for the first period of time.
 5. The firstdevice of claim 2 wherein the processing circuitry is further configuredto: determine the first period of time to display the content data. 6.The first device of claim 2 wherein the processing circuitry is furtherconfigured to: fail to establish the second wireless connection; andpower down the second wireless circuitry, wherein the content data isreceived via the first wireless circuitry following the failure toestablish the second wireless connection.
 7. The first device of claim 3wherein the first period of time is a fixed period of time.
 8. The firstdevice of claim 1 wherein the instructions comprise visual directioninformation indicating a path of direction and a turn, and wherein theprocessing circuitry is configured to: determine, based on a location ofthe first device, whether the first device is approaching the path ofdirection of the visual direction information; and in response to adetermination that the first device is approaching the path of directionof the visual direction information, displaying the visual directioninformation on the display of the first device.
 9. The first device ofclaim 8 the processing circuitry is further configured to: receive,during display of the content data, a user input; interrupt display ofthe content data in response to receipt of the user input; and inresponse to the user input signal: boot a video processor, capture,using the video processor, first camera data, write the first cameradata to a memory, shut down the video processor after writing the firstcamera data to the memory, and resume display of the content data. 10.The first device of claim 8 wherein a location is received at the firstdevice from the second device.
 11. The first device of claim 1 furthercomprising second wireless circuitry coupled to the processingcircuitry, and wherein the second wireless circuitry is configured to:receive content data from the second device.
 12. The first device ofclaim 11 wherein the content data comprises map information and visualdirection information, and wherein the first device further comprises alow-power processing circuit configured to: determine that a set ofcontent data to be displayed on the first device is not locally storedon the first device; power on the second wireless circuitry in responseto determining that the set of content data is not locally stored on thefirst device; and instruct the second wireless circuitry to receive theset of content data and power off the second wireless circuitry afterreceiving the set of content data.
 13. The first device of claim 12,wherein the map information and visual direction information is streamedto the first device from the second device.
 14. The first device ofclaim 12 wherein content data is displayed on the first device until thefirst device or the second device determines that a mapping directioncorresponding to a path has been followed by a user
 15. The first deviceof claim 1 wherein the first period of time is determined by sensor datafrom the first device.
 16. A method performed on a first wirelessdevice, the method comprising: establishing a wireless connection usingfirst wireless circuitry with a second device; receiving, from thesecond device via the wireless connection, an instruction to displaycontent data on the first device; in response to receiving theinstruction to display the content data, communicating a power-on queryto the second device via the wireless connection; receiving a responsefrom the second device comprising instructions to power on processingcircuitry; and initiating booting the processing circuitry in responseto the response from the second device.
 17. The method of claim 16further comprising: powering on the second wireless circuitry;establishing a second wireless connection using the second wirelesscircuitry with the second device; and in response to establishing thesecond wireless connection, receiving the content data from the seconddevice using the second wireless connection.
 18. A non-transitorymachine-readable medium comprising non-transitory machine-readableinstructions for performing operations comprising: establishing awireless connection using first wireless circuitry with a second device;receiving, from the second device via the wireless connection, aninstruction to display content data on a first device; in response toreceiving the instruction to display the content data, communicating apower-on query to the second device via the wireless connection;receiving a response from the second device comprising instructions topower on processing circuitry; and initiating booting the processingcircuitry in response to the response from the second device.
 19. Thenon-transitory machine-readable medium of claim 18 wherein theoperations further comprise: powering on the second wireless circuitry;establishing a second wireless connection using the second wirelesscircuitry with the second device; and in response to establishing thesecond wireless connection, receiving the content data from the seconddevice using the second wireless connection.
 20. The non-transitorymachine-readable medium of claim 18 wherein the instructions comprisevisual direction information indicating a path of direction and a turn,and wherein the operations further comprise: determining, based on alocation of the first device, whether the first device is approachingthe path of direction of the visual direction information; and inresponse to a determination that the first device is approaching thepath of direction of the visual direction information, displaying thevisual direction information on the display of the first device.